Winfield Formation
39 distinct taxa, from 58 fossil occurrences the Paleobiology Database records under this name, spanning 299–274 Mya.
Kansas, Oklahoma, Nebraska · US
39 taxa · 58 fossils · 299–274 MyaFiled under the Chase Group. Members recorded: Grant.
Macrostrat dates this rock 299–274 Ma. Macrostrat’s own record
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7 distinct localities, where the rock is now rather than where it was laid down. Tectonics draws the world it belonged to.
When
What has been found
- Pecopteris
- Neuropteris
- Sphenophyllum
- Taeniopteris
- Aurikirkbya wymani
- Bairdia hurwitzi
- Cavellina edmistonae
- Knightina incurva
- Roundyella simplicissima
- Sansabella bolliaformis
- Amphissites centronotus
- Annularia
- Araucarites
- Bairdia beedei
- Bairdia verwiebei
- Basslerella firma
- Callipteris conferta
- Cavellina nebrascensis
- Cornigella parva
- Ctenacanthus amblyxiphias
- Delocrinus vastus
- Ellipsella distenta
- Endelocrinus rotundus
- Gigantopteris
- Graphiocrinus scopulus
- Healdia winfieldensis
- Hemitelites hemitelioides
- Kindlella minuta
- Knightina texana
- Microcaracrinus twenhofeli
- Monoceratina lewisi
- Nebraskacrinus tourteloti
- Neurodontopteris auriculata
- Odontopteris brardii
- Rectobairdia symmetrica
- Schizopteris
- Sigillaria
- Sphenophyllum thonii
- Walchia
What else lived thenRank the rock of a period
Counts are of occurrence records, which measure the rock and the fieldwork together.